Flying machine



42%639. V Patented Aug. 22, 1922,

Y 2 SHEETS-SHEET 1 I K. HERRMAN-N.

FLYING MACHINE.

APPLICATION FILED MAR. 27-, 1920.

K. HERRMANN. FLYING MACHINE.

APPLICATION FILED MAR. 27, 1920.

1,426,689. Patented Aug. 22, 1922.

SHE S-SHEET. 2.

KURT HERRIVEANN, OF LEIPZIG, GERMANY.

FLYING MACHINE.

Application filed March 27, 1,920. Serial. No. 369,374.

To all whom it may concern." v

Be it known that IZURT. E'I ERRMANN, a German citizen,.residing at lvindscheidstii, Liepzig, Germany, has invented certain new and useful Improvements n Flyling Machines (for which I have filed cations in (.iermany as follows: Apr. 3, 1919, NO. 35,680; May 31, i919, No. saacsyivia 31, 1919, No. 3536a), of which the following is a specification.

This invention relates to flying II'litClllllQS, more particularly to flying machines in which the body or hull is entirely closed. It has been proposed in connection with such machines to arrange the entrance opening or door at the side of the body or hull, but such an arrangement presents some difficulties owing to the small height of the body or hull, as it necessitates at least one of the upper longitudinal beams to be interrupted to provide the necessary space for an opening or door of sufficient helght. It is the object of the invention to enable a suniciently high lateral opening to be used, and this object is attained by provid ng means which compensate for the weaken ng of the structure caused by the interruption of, or break in, the upper beam. These means consist in elements or parts which take up the stresses in the upper beam and transmit them to the lower beam below the opening or door, or through the frame surrounding the door or opening.

The accompanying drawing show three constructions embodying features of the invention.

Fig. 1 shows the first construction, Fig. 2 shows the second construction, Figs. 3 and 4 show details of the second construction. Fig. 5 shows the third construction.

n Fig. l (1 represents the upper beam of the body or hull, b the lower beam, (Z are the transverse frames or ties, i2, is the lateral entrance opening which leads to the entirely closed in cabin 1i. Adjacent to the entrance opening it are provided struts g, g", which extend from the beam or to the sole or base member is of the entrance opening it and the lower beam Z), the member 7a and the beam 6 being again connected by struts c, 0. Between the two struts g, provided on both sides of the entrance opening it, there may be provided further reinforcing members, either in the form of diagonal struts or reinforcing cover plates. It will be seen that in this manner the weakening of the appli structure caused by the break in the upper beam is sufliciently balanced or compensated for by the additional compensatingmeans provided around or close to the opening. The frame surrounding the opening'may of course, also be utilized to, strengthenthe structure and take part in the transmission of stresses.

A further strengthening of the structure is attained according to Figs. 2,3 and a by utilizing the transverse loclgingbolt ofthe door a member adapted to transmit both tensile and compression stresses and thus partly take up and transmitstresses that would otherwise be transmitted through the struts.

In Fig. 2 the entrance opening it is indicated by dotted lines, whilst the transverse bolt mand the door attached thereto are shown in full lines. The bolt m is situated in the line of the upper beam at and is connected to the twoinner ends the beam in such a manner as to bridge the gap between the ends caused by the entrance opening. One end of the bolt is connected to the beam through the hinge member 01, whilst the other end is connected by a hook-shaped portion 0 which engages a corresponding recess in the claw-shaped beam end r. Both the hinge band n and the claw 1" should of course be strongly connected to the respective beam ends. Instead of the hinge band and claw connection other suitable means of connection may be used which are adapt-- ed to transmit tensile as well as compression stresses.

In the construction shown in Fig. 5 the upper part 8 of the door frame is anchored to the upperbeam by struts p, 29 in order to provide additional strength and to relieve partly the struts g, g". The door frame should it necessary be strengthened or constructed in such a manner as to be capable to take the necessary part in the transmission of stresses. The covering top and side plates may also be utilized as reinforcing members.

I claim 1. In flying machines, a hull having a lateral entrance to the cabin, said opening having a sole or bottom part, upper beam members extending on both sides of the entrance opening, an uninterrupted lower beam member extending below the entrance opening, and brace means connecting the ends of the said upper beam members and tion comprising in combination, an interrupted upper beam, an entrance door frame extending upwardly through the upper beam, and a bolt connecting the two ends of the upper beams, substantially as described.

4; In flying machines, a hull construction comprising in combination, an interrupted upper beam, an uninterrupted lower beam, a lateral door frame extending through the upper beam, struts for anchoring the upper part of the frame to the ends of the upper beam, 'and struts connecting the upper beam ends and the lower beam.

5. In flying machines, a hull construction comprising an interrupted upper beam, a lateral door frame extending upwardly through the upper beam, an uninterrupted lower beam, struts connecting the lower beam andthe sole of the door frame, and struts connecting the upper beam ends to the sole of the door frame and, to the lower beam.

In testimony whereof he has hereunto set his hand in the presence of two witnesses.

KURT HERRMANN. Witnesses:

J OHANN TREW PETZOLD, J osnr RUDoLF NEUMANN. 

